10 Best Online Geometry Classes To Master The Subject

Best Online Geometry Classes

Some 2000 years ago, much ahead of the launch of the rockets into orbit, even prior to the time when explorers sailed across the globe, a Greek mathematician measured the size of the Earth.


In this calculation, nothing more than some facts about circles, angles, and lines were utilized. This is precisely what Geometry is. Geometry involves an exploration of truth, one that is universal and self-evident.


When universal truth is concerned, there is an inherent beauty, and amidst that, a feeling of sacredness arises naturally.


Are the geometry theorems making you feel clammy? Does geometry, as a subject, make you feel underconfident? Do you find it hard to solve geometry questions? Should you work on geometry a little more to solidify your basics?


It is time to take matters into your hands and enroll yourself in the best online geometry course. Of course, the internet has a range of online geometry lessons. Of the available online geometry classes, how do you find the best course to learn geometry online?


Well, fret no more. We have simplified the work for you. This guide has ten of the best courses for geometry training. Now, let us get started and address these courses one by one.


In This Article:


Top 10 Courses to Train Yourself in Geometry

1. Become a Geometry Master – [Udemy]

Become a Geometry Master

Enrolled20,231 students
Duration8 hours on-demand video
InstructorKrista King
Return or refund policy30-Day Money-Back Guarantee
ConsThe material in the course is not organized orderly.


At the top of our list is the bestseller online geometry course by Udemy. This is the best online geometry class, which comprises 232 lessons. There are several text and video explanations in the course, which covers everything to know in Geometry.


It also has 60 quizzes and their solutions. In addition, you get extra practice problems and workbooks that can help you assess your understanding of what you have learned.


All the resources in the course come with lifetime access. You also get constant support from the experts. Taking this course will make you a master at geometry.


Topics Covered

The topics covered in this geometry training program are:

  • Lines and angles, including interior angles of polygons
  • Quadrilaterals, like rectangles, squares, and parallelograms
  • Circles, including arcs, inscribed angles, and chords
  • Area and perimeter for two-dimensional figures
  • Volume and surface area for three-dimensional figures
  • Triangles, including interior angles, bisectors, and circumscribed and inscribed circles
  • Pythagorean theorem and Pythagorean inequalities
  • Triangle congruence, including SSS, ASA, SAS, AAS, HL, CPCTC, and isosceles triangle theorem
  • Triangle similarity, including 45-45-90 and 30-60-90 triangles, plus triangle similarity theorem and midsegments
  • Transformations, including translating, rotating, and reflecting figures
  • Last but not least, you will learn about logic in geometry with this online geometry course.


Learning Outcomes

A few things you will learn in these best online geometry lessons are:

  • Basics of Quadrilaterals, triangles, and circles
  • Calculations of the area, perimeter, and angles of the quadrilaterals, triangles, and circles
  • Shapes in the space, including the distance between two points in space
  • Scale factors and dilations, including the triangle similarity statements
  • Triangle congruences such as AAS, SSS, CPCTC, SAS, ASA, HL, and Pythagorean Theorem
  • Parallels and polygons and their exterior and interior angles
  • Proofs and logic, including converses and conditionals
  • Transformations of figures, including reflecting, rotating, and translating
  • 3D geometry, including cylinders, pyramids, cones, prisms, and spheres



This is a great course to learn geometry online. But for this course, you must be:

  • Comfortable with arithmetic – addition, subtraction, multiplication, division of the whole numbers
  • Knowledge of the fundamental algebraic operations
  • Understanding of the simple equation solving


Who should take this course?

This is the best online geometry course, which is ideal for:

  • Current geometry students
  • Students who wish to start learning geometry
  • Homeschool parents who want to assist their students with geometry
  • Anyone who wishes to study math


Reviews by Sahana:

Super helpful. There were tons of resources and each topic was explained clearly and understandably.



2. Sacred Geometry: Comprehensive Course – [Udemy]

Sacred Geometry: Comprehensive Course

Enrolled646 students
Duration3.5 hours on-demand video
InstructorScott Onstott
Return or refund policy30-Day Money-Back Guarantee
ConsThough the instructor claims it to be a comprehensive online geometry course, it is not really so.


This is a bestseller online geometry class from Udemy.


Learning Outcomes

If you wish to learn geometry online, this is a great course. A few things covered in the course are:

  • Geometry skills
  • Knowledge of the golden ratio
  • Understanding the sacredness of pure geometry



This is the best online geometry course and comes with no strict prerequisites. You do not need any experience either. You can draw in the class via a compass, paper, pencil, straightedge, or a free iOS app.


The instructor majorly utilizes Euclidea: Sketches, a 100% free iOS app. To streamline the learning process and follow along, you can also download the same app as the instructor.


In addition, here is a list of books that the instructor mentions in these online geometry lessons. Of course, you don’t need to shop for these books, but for this course or otherwise, they are surely going to be a good read.

  • Drawing Geometry by Jon Allen ISBN 9780863156083
  • Ruler & Compass by Andrew Sutton ISBN 9780802717764
  • Sacred Geometry by Robert Lawlor ISBN 9780500810309
  • City of Revelation by John Michell ISBN 9780345236074
  • Euclid’s Elements (first published circa 300 BCE, ISBN 9781375462631)


Who should take this course?

This course will benefit anyone who aspires to learn about sacred geometry.


Reviews by Brett F C.:

I really learned a lot from this course – it was well constructed, well delivered and most of all, lots of fun. Thanks Scott.



3. Geometry Basics to Advanced – [Udemy]

Geometry Basics to Advanced

Enrolled784 students
Duration14 hour on-demand video
InstructorJackson Kailath
Return or refund policy30-Day Money-Back Guarantee
ConsThe course lacks organization.


Need the best online geometry class? Well, this can be the right pick for you. This is the best online geometry course and has ten sections. There are 282 videos in the course, which helps you be a pro at Geometry Master.


After you are through with the course videos, you can go ahead and solve the 183 questions included along. You also get solutions along the course. So, you can check your learning.


Hence, this course truly gives you a solid foundation. Moreover, every resource you get with the course comes with lifetime access. In addition to the course contents, you also get support from the instructor.


Also, it is a comprehensive geometry training. Some topics covered here include:

  • Geometry Basics
  • Triangles
  • Polygons and Quadrilaterals
  • Graphical Division approach to Geometry
  • Shapes in Shapes
  • Circles
  • Trigonometry
  • Coordinate Geometry
  • Solids
  • QUIZ to test your learning


Learning Outcomes

Some things you will learn in these online geometry lessons are:

  • Basics of geometry, such as angles, lines, and points
  • Polygons, quadrilaterals, triangles, trigonometry basics, solids or 3D shapes, and coordinate geometry
  • Approaching geometry differently with the graphical division method
  • Learning an interesting approach in geometry when regular shapes are inscribed in other shapes.



To learn geometry online with this course, you must know:

  • Essential addition, multiplication, division, and subtraction
  • Understanding of basic equation solving


Who should take this course?

This online geometry course is ideal for:

  • Students who wish to be well-versed with geometry but in an interesting and a fun manner
  • Anyone who finds geometry difficult
  • Anyone who aspires to solidify their understanding of geometry


Reviews by Alphonsa L.:

Great job by the instructor. He covered a lot of ground quickly but the explanations were always clear. I can surely recommend it.



4. Master Geometry: Full Curriculum with Practice – [Udemy]

Master Geometry: Full Curriculum with Practice

Enrolled510 students
Duration7.5 hours on-demand video
InstructorGrant Hall
Return or refund policy30-Day Money-Back Guarantee
ConsMore quizzes can be added to the course.


This is the best online geometry class, wherein you can master some of the most challenging Geometry topics and prepare yourself for the next math course seamlessly. In this course, you will find fifty lectures covering different geometry topics.


As you move along through the topics, you can measure your progress via the quizzes and the videos, which have multiple examples to follow along.


Learning Outcomes

It is an excellent course to learn geometry online. A few things covered in the course are:

  • Constructing the classic two-column geometric proofs
  • Finding the missing side lengths and angles in the triangles or other polygons
  • Solving for arc lengths and sector area in the circles
  • Understanding the mathematical logic – converse, inverse, and contrapositive
  • Learning about the similarity and congruence, including the triangle combinations, such as SAS, SSS, HL, ASA, and AAS.
  • Developing an intuition for coordinate geometry
  • Midpoint and distance formulas, along the perpendicular and parallel lines
  • Working with the secants, tangents, and chords, along with formulas for the circles



For these top-best online geometry lessons, you must be:

  • Willing to work hard and practice more
  • Have a basic understanding of algebra


Who should take this online geometry course?

This online geometry class is ideal for:

  • Anyone currently studying geometry
  • A homeschooling parent who seeks additional resources for their child
  • Anyone who aspires to get ahead in their class
  • Anyone who desires to review maths that they haven’t done in a while


Reviews by Elizabeth B.:

The geometry course that I am taking is built on proofs. This course has helped me to learn the whys behind the rules used in proofs. It has definitely been very easy to understand and follow along with. Thank you.



5. Computational Geometry – Offered by Saint Petersburg State University – [Coursera]

Computational Geometry – Offered by Saint Petersburg State University

Offered bySaint Petersburg State University
Enrolled4,946 students
DurationApprox. 19 hours to complete
InstructorAlexander S. Kulikov, Kira Vyatkina, and Aliaksei Tolstsikau
Return or refund policy14 days from the date of payment
ConsThe instructor could work a little on their teaching style.


These online geometry lessons will introduce you to computational geometry – a branch of algorithm theory via which solving problems around geometric objects is made easier. It is widely used in robotics, geographic information systems, computer-aided design, computer graphics, among other things.


In addition, every lesson has an array of programming tasks, which can help you assess your acquired knowledge and better your competitive coding skills.


This is a 100% online geometry course. You can start, proceed, and finish at your timeline. So, if you have the aspiration and willingness to learn geometry, this can be the best geometry training.


Learning Outcomes

This best online geometry class will teach you an array of things. These include:

  • Finding the ideal method for a concrete problem
  • Proper representation of geometric primitives
  • Understand the strong and weak points in a certain context
  • Familiarity with core computational geometric tasks
  • Getting well-equipped with computing the convex hull of a point set, testing point inclusion in a polygon, intersecting line segments, triangulating a polygon, and processing orthogonal range queries.
  • Evaluation of geometric predicates



This is an intermediate-level online geometry class. So, before you enroll for this course to learn geometry online, you must know at least one programming language – loops, recursion, input/output. Further, familiarity with basic math – proof by contradiction and proof by induction will also come in handy.


Reviews by SZ:

Great opportunity to learn the algorithms. Challenging at times trying to figure out where your code went wrong, but you eventually get through it. Assignments can take a bit of time.



6. Introduction to Geometry – Offered by School Yourself – [edX]

Introduction to Geometry – Offered by School Yourself

Enrolled65,642 students
DurationEstimated 14 weeks (4–6 hours per week)
InstructorZach Wissner-Gross, John Lee, Vivek Venkatachalam, Kenny Peng, Michael Fountaine, and Stephen Face
Return or refund policy7 days from the date of payment
CertificationOnly in the paid version
ConsGraded assignments and certification will not be provided with the free version.


A good thing about this best online geometry course is that you have the freedom to pick your path. You can also jump between different lessons if you would like a quick review of the study material. In the course, the standard school-like curriculum is followed.


Learning Outcomes

In these best online geometry lessons, you will begin at the basics of geometry and ponder on questions, such as how big an angle is or defining parallel lines. As you move ahead with the course to learn geometry online, you will work on some progressive proofs and theorems about 2D and 3D shapes.


You will study the application of properties of quadrilaterals, triangles, and other polygons. In addition to it, this online geometry class will also touch upon the different ways to find the area of the triangle, applying the Pythagorean theorem and rules to find out the angles are congruent.


A section is also dedicated to the angles and line segment in a circle. Further, you will come across a shortcut to count the total number of stones included in the Great Pyramid of Giza.


The instructor will also help you estimate the Earth’s size. Lastly, you will be calculating the surface area and volume of 3D solids.



Bonus Courses

1. Geometry – Math Planet

Geometry – Math Planet
Geometry is the high school’s fourth math course. Across this online geometry course, you will study various geometrical aspects. It includes points, planes, lines, angles, parallel lines, similarity, trigonometry, transformations, quadrilaterals, areas, and circles.


The whole online geometry class is divided into ten chapters, and there are several online geometry lessons per chapter.


In every lesson, you will find several examples, video lessons, and theory, making learning more interactive. So, with Math Planet, learning becomes more exciting and engaging.


Topics covered

When you take this free course to learn geometry online, here is a list of all the topics that you will study:

  • Points, Lines, Planes, and Angles
  • Proof
  • Perpendicular and Parallel
  • Triangles
  • Similarity
  • Right Triangles and Trigonometry
  • Quadrilaterals
  • Transformations
  • Circles
  • Areas



2. High school geometry – [Khan Academy]

High school geometry

Khan Academy also has a comprehensive online geometry class. Completing this course will make you proficient in geometry. A good thing about this online geometry course is that the course will earn you 9000 mastery points.


Learning Outcomes

In these online geometry lessons, you will study the following:


Performing transformations (will fetch you 1600 Mastery points)

  • Intro to Euclidean geometry
  • Introduction to rigid transformations
  • Translations


Transformation properties and proofs (will fetch you 9000 Mastery points)

  • Rigid transformations overview
  • Dilation preserved properties
  • Properties & definitions of transformations


Congruence (will fetch you 1000 Mastery points)

  • Transformations & congruence
  • Working with triangles
  • Triangles congruence from the transformation
  • Congruent triangles
  • Theorems concerning triangle properties
  • Constructing lines & angles
  • Theorems concerning quadrilateral properties
  • Proofs of general theorems


Similarity (this section of the online geometry course carries 1000 Mastery points)

  • Definitions of similarity
  • Introduction to triangle similarity
  • Solving similar triangles
  • Angle bisector theorem
  • Solving problems with similar & congruent triangles
  • Proving relationships using similarity
  • Solving modeling problems with similar & congruent triangles


Right triangles & trigonometry (will fetch you 900 Mastery points)

  • Pythagorean theorem
  • Pythagorean theorem proofs
  • Special right triangles
  • Ratios in right triangles
  • Introduction to the trigonometric ratios
  • Solving for a side in a right triangle using the trigonometric ratios
  • Solving for an angle in a right triangle using the trigonometric ratios
  • Sine & cosine of complementary angles
  • Modeling with right triangles


Analytic geometry (will fetch you 1000 Mastery points)

  • Distance and midpoints
  • Dividing line segments
  • Problem-solving with distance on the coordinate plane
  • Parallel & perpendicular lines on the coordinate plane
  • Equations of parallel & perpendicular lines


Conic sections (will fetch you 800 Mastery points)

  • Graphs of circles intro
  • Standard equation of a circle
  • Expanded equation of a circle
  • Focus and directrix of a parabola


Circles (will fetch you 900 Mastery points)

  • Circle basics
  • Arc measure
  • Arc length (from degrees)
  • Introduction to radians
  • Arc length (from radians)
  • Sectors
  • Inscribed shapes problem solving
  • Proofs with inscribed shapes
  • Properties of tangents
  • Constructing regular polygons inscribed in circles
  • Constructing circumcircles & incircles
  • Constructing a line tangent to a circle


Solid geometry (will fetch you 900 Mastery points)

  • Mastery points 2D vs. 3D objects
  • Cavalieri’s principle and dissection methods
  • Volume and surface area
  • Density



3. Geometry – [School Yourself]


In this online geometry course, you will learn all that is to know about geometry – the mathematics of shapes, lines, and angles. There are 14 lessons included in this best online geometry class. Each of the lessons covers a different sub-topic and explains it in detail.


There are also multiple practice questions and exercises included in this course to ensure that your progress to learn geometry online is on track. When you log in to the platform, it is easier to track your progress with the course.


You can browse through the annexed website to know the curriculum of this geometry training.



4. Geometry Fundamentals – [Brilliant]

Geometry Fundamentals

This online geometry course will present an incredibly engaging and intuitive introduction to geometry to you. With this online geometry class, you can understand how intuitive geometry works when you keep simple assumptions and use your own logic and reasoning for calculations.


It can be a go-to course for someone just starting with the subject. Once you are through with this course, you will be a pro-geometry-related problem solver. In addition, there are several practice questions in the course to give you substantial practice.


Learning Outcomes

It is a great course to learn geometry online and will familiarize you with the angle axioms, perimeter and area calculation strategies, coordinate geometry, 3D geometry, and more.


Topics covered

  • Angle Axioms
  • Coordinate Geometry
  • Curry’s Paradox
  • Invariant Areas
  • Parallel and Perpendicular Lines
  • Perimeter
  • Similarity
  • Surface Area
  • The Pythagorean Theorem
  • Three-Dimensional Figures
  • Volume



Some prior experience with algebra is assumed when you enroll in this online geometry course. So, when you sign up for the course, you must be in a position to plot linear equation points on a coordinate plane and employ a variable to define the relationship between the side length of the square and its area.


Related: Precalculus Online Courses, Statistics Classes Online




So, these are the top ten best online geometry lessons. We have tried to include only the best geometry training programs from the internet in this guide and have included all the information here.


However, some details, such as the course fee, enrolment date, instructor bio, course review, and other associated details, are not present here. If you need those details around any of the above-listed online geometry classes or all of them, you can click on the annexed link.


This information will help you in making a more informed decision. However, regardless of your selection, it will be the best online geometry course. So, go ahead, take your pick, and get set ready to learn geometry online!


Best Online Geometry Classes Reviewed by 10 Math Experts 4.6
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